HaxAras has just submitted some Achievement Flag Info for
Viscera Cleanup Detail: Santa's Rampage Achievements:
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Flag submission by HaxAras for Viscera Cleanup Detail: Santa's RampageHaxAras said:I believe the "collect x item" achievements all count as stackable because you can collect all of them in your Janitor's trunk at once and then exit the level.
As for the "story" achievements, if you want to call them that, you can get all 3 of them when going for the Sanitized Earth achievement. When you destroy everything, you'll get the cheevo's for beating the level and cleaning it.
I don't believe the Scorched Earth version of the "story" achievement requires additional playthroughs. A lot of the achievements can be obtained by saving the game at any point, and either repeating an action, loading a previous save, or clocking off. So for example, the player can clean everything, save, and then clock off. Then load the save, get some gore from the bin or bucket machines, and then use them to make a mess all over the level and clocking off.
I refer to them as "Story" as the player is a Janitor in a single Christmas level, in charge of cleaning it up. There are PIDs to fill out reports for, letters to Santa, etc. But there are really no story elements to be obtained, aside from beating the level.